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  3. the null and alternate hypotheses are:    h0

The null and alternate hypotheses are:    H0: ?1 ? ?2 H1: ?1 > ?2 A random sample of 26 items...

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Basic Math

The null and alternate hypotheses are:
  
H0: ?1 ??2
H1: ?1 >?2

A random sample of 26 items from the first population showed amean of 114 and a standard deviation of 9. A sample of 15 items forthe second population showed a mean of 99 and a standard deviationof 7. Assume the sample populations do not have equal standarddeviations.

a.

Find the degrees of freedom for unequal variance test.(Round down your answer to the nearest wholenumber.)

  Degrees of freedom  
b.State the decision rule for 0.025 significance level.(Round your answer to 3 decimal places.)
  Reject H0 ift>  
c.Compute the value of the test statistic. (Round youranswer to 3 decimal places.)
  Value of the test statistic  
d.What is your decision regarding the null hypothesis? Use the0.025 significance level.
  Null hypothesis(Click to select)not rejectedrejected

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